GRNVoip United States
General office
GRNVoip
Varick St.
New York
New York ,10013
United States
Phone: 212 803 1724
Site: http://www.grnvoip.com
GRNVoip
Varick St.
New York
New York ,10013
United States
Phone: 212 803 1724
Site: http://www.grnvoip.com
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In telecommunications the automatic call-back is a computer telephone function which allows the user by the engaged addressee’s line or in the other case of the subscriber’s inaccessibility indicating the system to save the number of the called subscriber and make the call when the line will be available or when the called number is not engaged.
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